Method of manipulating plastic glass and apparatus for the same.



I. M. HULBERT. METHOD 0F MANIPULATING PLASTIC GLASS AND APPARATUS POR THB SAME.

APPLICATION FILED MAY 12, 1904.

Patented Nov. 24, 1914.

2 SHEETS-SHEET 1.

l A fizz/eizlbi WM M. #m

M24/[72 etwas W5C'. M

P. M. HULBERT. METHOD 0F MANIPULATING PLASTIC GLASS AND APPARATUS FORTHESAMB.

APPLICATION FILED MAY 12, 1904.

l 1 l 8,204. Patented Nov. 24, 1914.

2 SHEETS-SHEETZ.

'- UNITED rniisco'r'r u. IIUILBEM, or DETROIT,y MICHIGAN. i 1

mamon or nANIIULATIir PLA- s'rccmss A Nn APPARATUS lrois. SAME.

To'ZZ whom, it may concern:

Beit known that I, PRE'sCo'i'r M. HUI.- BER'T, 4residing at Detroit, thecounty of Wayne and State of Miehigan, a citizen of the United States,have invented certain new and useful Improvements in the Method ofManipulating Plastic Glass v and Apparatus for the Same,` of which thefollowing is a specification, reference being had therein to theaccompanying drawings;

The invention relates to the manufacture of articles of glassware, andconsists first in' manipulating the glass by actual contact' therewithwill either partially destroy its plasticity by chilling orwill retain acertain portion of the glassI with which it contacts.' In thelatter-case, Where'the' apparatus is subject to loss of heat throughradiation, the amount of adhering glass vWill constantly increase so asto finally interfere vvith they performance of the function of the'device'.

With the present invention both diiiicul ties are overcome bymaintaining the surfaces of the apparatus for manipulating the glasswhich are in direct contact therewith at such a temperature as to avoid,first, the

chilling of the glass under manipulation,- and, second, the accumulationof a crust' or deposit of partially hardened glassl upon the' surface'.

My improved method may be carried out'l in various'ways but in alltheportions of glass manipulated are separated and transferred Withoutchilling. Furthermore the portions" separated may be accurately m'eas`ure'd, so that successively separated pro# tions are uniform inquantity.

In the drawings I have illustrated one form of apparatus which may belemployed for separating pre-determined quantities of plastic'glass'from` a mass thereof, and de-y .iivrin'g the same; to' the milioni-ngdevice.

Slpeci'oation of 'Letters atent.

'Patented Nov. 24, 1914.

Amalia. mea my 12; 1964. serial m.' 2ov,es.

It is obvious, however, that this specific forni of apparatus may be'varied Without departing from the spirit of my. invention.

As sho'vvn Figure 1 illustrates a longituf dinal section through ameasuring and transferring apparatus for molten glass. Fig. 2 1s a'front elevation thereof.' Figs. 3, 4, 5, G and are diagrams illustratingthe operation of thedevice shown in Fig. 1, and

-Fi'g 8'illustrate's a modified form of apparatusin which the .measuringand separating apparatus is arranged at a distance' from the furnace inwhich the glass is melted5the plastic glass' being automatically conveyed thereto. A s has been' stated the esseri'- tial feature of myinvention is that all surfaces contacting with the glass' in measuringandA transferring the same are maintained at a'- unifori'ul hightemperature, pref- 1 erably substantially that of the plastic glass.

This' I preferably accomplish by electricallyheating said surfaces so asto compensate the heat t at Would otherwise be lost through radiation'.lFig; 9 is an end vievv showing the mechanism for adjusting the throw ofthevpiston.- Fi I. 10 is a sectional view of v one of the mol s R, andFig. llis' a sectional vievsT showing' the` moldwith thev presserplunger S contact' viith the' ma" terial.

As shown' in Fig. .1, is a conduit or dissv chargel spout from'4 areceptacle forl a mass of molten glass,` such as the furnace B, and- C'isa measuring -and transferring device associated with Said dischargespout. a' is' a` pocketkor receptacle in the transfer device:

C which is adapted to be registered with the" discharge opening [1 ofthe spout ..v The contacting surfaces c and d in the transfer device Cand the spout A. are' 'of corresponding segmental form, and the member.C isy mounted upon trunnions D which permit of its' being oscillated.The pocket .a is also preferably adjustable in size and. is furtherpreferably provided with a mechanical ejec# tor'. .The/mechanism forthis purpose as shovv'nv comprises al piston E slidabl'e Within thepocket. This pistonl is' provided with an operating shank `such as thepiston rod- I F which is guided in bearings G secured to the member C,and tle'pisto'n rod may be mechanically operatedby `suitable means gagesaroller on af. rock-lever K connected 'by a` link movement K2 to the"piston' 'suchA as the stationary cam` J with which enfsgefliected lby arod. ,The member-C is rocked by suitable` means, such as theprank arm .Hsecured to one of the trunnionsD and the reciprocatory rod I attached tosaid-.crank arm.'l 'll-hns.

5 when the rod I is reciprocated the member C will be moved from aposition'shown in Figs. l and 3 successively to the positionsillustrated in Figs. 4, 5, 6 and 7, andlduring this movement the cam Jand roller K will cause a reciprocation of the piston E'as Willbehereinater: set forth.. fllo change thel movement of the piston adierent cam may be substituted for the cam J, or by adjusting the linkK? which :will alter the size of `thep'ocket as indicated by dottedlineE.

With the apparatus thus far described, molten or plasticl glassdowingfrom the furnace through=the discharge spout A will' pass to thepocket a in the member C, said pocket being opened e to receive theglass by the outward movement ot the `piston E. As soon as the pocket isvlilled the trunnions D yare rocked through the mechanism described',-oscillating the member-C so as to lclose the discharge aperture b 'ofthe spout bythe surface c of the member C, and at the same time move-thepocket beyond the segmental surface al to permit of the discharge of.the glass. rllhe complete discharge is downward -movement of the pistonE, which ejects the glass in the pocketl after which the trunnions D areagainrpcked to return'the member C to its initial." position, while atthe same time the end eof the'surface al will scrape over the surface cto free the same of the I'greater portion of the adhering glass. Whenthe piston E -is once more in registration withthe aperture bj itis'again movedv outward to free the pocket a and fill thesame with glassfrom the spout A., .-v y

The apparatus as above described would beinop'erative for the continuousmauipu lation of glass', for the reasons heretofore-,- stated, namely:First,- that the Walls orsurfaces contact withthe glass'if cold wouldimmediately chill the glass, and destroy' its plasticity, and secondly,-ifinitially heated' but not constantly supplied with heat equal 5u tothat ofthey glass, the-loss through `radia-a tion'wouldsoon cause theaccumulation-ofa crust that wouldcl'og the apparatus a'nd preventoperation. I have, therefore, arranged electric heaters @,'QF and Q3which are Apreferably 'embedded in-the Walls of the pocket a, the end ofthe piston E and in the surfaces which cuts o' or ycloses the aper' tureZ). The lining of the spout A. may, ir' necessary, be also provided with-a heater Q. These heaters may be formed by wires or strips embedded in-thewalls and tmain-vY tained atincandescence by; the passage of an..

electricrcurrent therethrough-i 1The-materrialof which-theliningsurfacesfof Ythespout.- A.' and the. member Grarexieaml .MWSt-yf fQffncoursr-i,v be capable et?withstanding a itemperature equal to that ofthe plastic glass, and as the spout and transfer C are arranged withoutthe furnace they are preferably provided with a suitable external heatvinsulation which prevents the rapidwdissi The separating andtransferring device gfi above described will deliver the glass in itsplastic, unchilled condition directly intothe mold'or other device inwhich the article is fashioned. In the drawings-l have shown molds Rwhich may be arranged in an end-g5 less. series and which aresuccessively moved to a position directly below the die. charge ofthepocket a to receive the glass ejected therefrom.I When the glass isdeposited in the mold, the latter' is moved into 9ov alin'ement with thepressing plunger S, which shapes the glass either'in its final form orin the form of a blank suitablefor further manipulation. f n

In Fig. y8 I have shown an arrangement in 95 which aconduitT is arrangedto lead from the glass tank in the furnace B to a `series ofmeasuringdevices, C', C2, `etc., located at some distance 'romuthc furnace.Thepassage of the glass through the conduit T may be effected either bygravity or by .any means. ofpropulsion, and the clogging of the con--duit is prevented by maintaining the lining thereof at asuitable'temperature as by, means of the heaters U. The measuring delos vices C,C2, &c. may loe-similar in construction tothe ,one already described.

uThe material employed forming the meas'- uring receptacle and otherparts of the apparatus, which contact with the molten 11o glassma.ybegof any substance which will Vnot have a detrimental action upontheglass.

Thus, silicate of aluminum, or other clay, usually employed in themanu-facture of` glass-pots, may be used. The specific con- 115lstruction of the heating resistance forms no l part of the presentinvention',- and any material known in the art capable of standing up`under the .temperature developed maybe l1Sed. I

What'I claim as my invention isz- The method of manipulating glasslwhich4 consists iny mechanically separating from aVA body of heatedplastic glass an ac-j curately measured and completely severed*unchil'led portion corresponding in quantity to a single article to befashioned therefromk "2..T-he methodv of -manipulating plastic glassfwhich consists ,in separating .and delvering to the fashoning means ameasured- 1a@ quantity of heated glass by instrumentalities maintainedat a temperature as highas that at which glass is plastic. l

3. The method of manipulating glass, which consists in mechanicallyseparating from'a mass of' heated plastic glass an accurately measuredunchilled portio corresponding to the capacity ofa mold, and in droppingthe separated portion'from a surface heated to a temperature at Whichglass is fluid directly into the mold.

4. The method of manipulating glass, which consists in filling ameasuring receptacle with heated plastic glass and in then ejecting theglass from said receptacle, the surfaces with which the glass contactsbeing maintained at altemperature above the melting point of the glass.

'5. The method ofv manipulating glass which consists in filling withplastic glass a measuring receptacle, the contacting surfaces of whichare heated to a temperature above the melting point of the glass, and

` in discharging the glass ,from said receptacle Without intermediatecontact with the other surfaces directly to the fashioning means.

6.v The method of manipulating glass,

l Which consists in filling with plastic glass a measuring ieceptacle,`the contacting sur.- faces of 'which vare heated to a temperature abovethe melting point of the glass, in separatingthc glass in saidreceptacle from themass by the interposition of 'a cut-off. heated to anequally high temperature, and in discharging theglass from said-receptacle directly andXWithout intermediate contact with the othersurfaces to the fashioning means. 40

7. -An apparatus for manipulating glass comprising a measuringreceptacle, means for alternatelv filling with and discharging from saidreceptacle plastic glass and means for maintaining the surfaces of saidreceptacle contacting with the glass at a temperature as high as that atwhich glass is plastic. a

8. An apparatus for manipulating glass comprising a measuringreceptacle, means for alternately filling with and discharging from saidreceptacle plastic glass,` a cut# off for serving the measured glass insaid receptacle from the source -of supply, and means for maintainingthe contacting surfaces of said receptacle andcut-oif at a temperatureas high as that at which glass is plastic.

9. An apparatus for separating measured quantities of plastic glasscomprising a measuring receptacle, means for placing said receptacle incommunication with a. mass of plastic glass to fill the same, a cutofffor severing the glass in said receptacle `from the mass, and completelyclosing said receptacle, the surfaces of said 4receptacle and cut-0H incontact with the glass beingl maintained vat a temperature as high asthat at which glass is plastic, and means for ositively discharging theglass from sai receptacle.

1G. ,An apparatus .for separating measured quantities of plastic glasscomprlsing a-7 .for maintaining the surfaces of said cy1in` der andpiston in contact with the glass at a temperature as high as that isplastic. a

11. The method of manipulating glass, which consists in separating froma mass of plastic glass a ortion thereof by the interposition of ahighly heated medium.

12. The method of manipulating glass, which consists in severing from amass of plastic glass a portion thereof by the interposition of acut-off' heated to a tem erature at which the plastic glass will reelyseparate therefrom. Y

13. The method of manipulating glass, which consists in severing from amass of plastic lglass a portion thereof by the interposition of acut-oli` heated to a temperaat which glass l y15.'The method ofmanipulating glass, L I

which consists in separating from a mass of plastic glass, an unshapedmeasured quantity bythe interposition of a highly heated cut-off. c

In testimony whereof I aiix\my signature in presence of two witnesses.

PRESCOTT M. HULBERT.

